I don't understand exactly which F you mean - but from one F to the next it is one octave.
That would be 1200 Hz. Every octave is a superposition of the note below it, so the frequency doubles. The octaves above that would be 2400 Hz, 4800 Hz, and so on...
An octave consists of the same note being sounded at different intervals one above or below the other, as in middle C and the C above or below it. A unison is the same note being sounded at the same place, as in a piano middle C and a guitar middle C being sounded simultaneously or two voices both singing middle C.
To answer it you look at the middle number and if it is above 5 you round higher. If it below 5 you round lower.
If, for example, the lowest G is the first G below middle C, this G would be in the space below the second ledger line below the stave (with the G clef (treble clef). The next note, A, would be on the second ledger line below the stave, the next note, B, will be in the space below the first ledger line, then middle C, and the notes D, E, F and G (that completes the first octave) will be on consecutive spaces and lines above middle C, so that the G completing the first octave will be on the second line on the stave. The second octave will continue with the A in the second space from the bottom, the B on the line above, and the C, D, E and F will be on the consecutive spaces and lines above. The G that completes the second octave will be in the first space above the stave. Also, both F notes will will have a sharp symbol to the left of them ( like a hash sign), unless this symbol appears after the treble clef symbol at the start of each stave.
0 is the middle number, as below it is -1 -2 -3 -4 -5 -6 and so on, above it is 1 2 3 4 5 6, etc.
An 88-key piano has 7 octaves plus three additional keys - making the keyboard have 7 1/4 octaves in total. Some pianos also have exactly 7 octaves ranging from the A 3 octaves below middle C to the A three octaves higher than the A tuned to 440Hz (the A above middle C).
Bb 2 octives below middle C
The "E" two octaves below middle C is the low E for a bass. Play the E on a piano then match it with your bass. Then the A above that, the D above that, the G above that.
Bass or Baritone.
The pitch range of the piano is from the A three octaves below middle C to the C four octaves above middle C. Modern pianos have a range of 7 1/4 octaves. The range of the piano in Mozart's time was about 5 octaves.
G two octaves below middle C
The range of an oboe is from a B flat below middle C to a high G. So just over 2 and a half octaves
It depends on the player, the usual highest written note is C above the staff and the usual lowest note is two octaves below the staff g. However some players can go further. Notes above the high C aforementioned are known as "supers".
The french horn can reach 2 octaves above middle C (concert pitch: the F a fifth below) and down to the C two octaves below middle C (again, concert pitch a fifth down from this note), giving it a four octave range. the higher and lower notes are very difficult to play though, and so are rarely used by composers.
The viola range is roughly from the c below middle C to the C two octaves above middle C. However, as with all instruments the upper range varies on the capability of the player, as, unlike woodwind instruments, there is no defined upper limit.
The flute has a range of 3 octaves, from middle C up to the C 3 octaves above. It is possible to attach a different foot joint which will allow you to play bottom B & Bb, but this does not come as standard. The flute sounds like the wind in spring.
F2 is the F 2 octaves below the F a forth above middle C. 2 refers to the second octave. Middle C is referred to as C4. The C below that is referred to as C3 and then the C below that is C2. To find F2 first find C2 and then go up to the F closest to it.